Middle Software Developer (SharePoint) (m/f/n)

For one of our Partners, we are looking for a Software Developer (SharePoint) to support long-term project delivered for a European Union organization based in Warsaw. Certificates: At least 1 certification among: Intermediate level certificate in software development relevant to the domain or an equivalent certification recognized internationally (subject to acceptance as a valid credential by the Contracting Authority). Knowledge and skills: Has gone at least 1 time through the complete lifecycle of the solutionExpert in developing enterprise level software systems in specified technology domainKnows UML and can design applications in UMLProficient in designing and developing: data layer, business logic layer and UI layerWorked in Scrum developmentsIs capable for leading technical teamsHolds ability to document effectively technical solutionsPresents problem solving skillsEnglish: B2Specific requirements: At least 4 years of professional experience in IT, including 2 at similar position or relevant to the profileDeveloped front-end solutions under SharePoint Framework (SPFx and REACT) and other client-side frameworks/libraries (for example JavaScript)Developed advanced consumption of SharePoint data using PnP, SharePoint REST API, and Microsoft Graph API. Developed secure client-side componentsDeveloped (server-side) code (C# / . NET Framework/ SQL) including Web Parts, EventReceivers, and Timer Jobs. Experienced with enforcing secure coding principles (OWASP) across both . NET server code and JavaScript client code to prevent vulnerabilities like XSS or SQL injection. Holds valid Microsoft Certificates relevant for the profileDeveloped SharePoint On-line solutions using Power PlatformOffer: Rate: 354 EUR/MD net + VATSet-up: Remote with occasional visits in Warsaw officeB2B cooperation with SHIMILong‑term engagement: 220 MD / 12 months, with up to 3 possible extensions (maximum total duration: 41 months)Planned contract start date: 01.12.2026Benefits: Multisport card, Private medical care